<template>
    <div id="init-viewer-wrapper">
    </div>
</template>
  
<script>
export default {
    name: 'Clock',
    components: {},
    mounted() {
        this.initViewer()
    },
    methods: {
        async initViewer() {
            Cesium.Ion.defaultAccessToken = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiIzM2RjYjJlOC01ZTQwLTQwODYtOTEwMy02M2U4OGEzYjQyNGUiLCJpZCI6MjI5NjUsInNjb3BlcyI6WyJhc3IiLCJnYyJdLCJpYXQiOjE1ODI0NTYwMzF9.VG2_T9ry8EnBWAh4msJ3s6m2jW_5hgAZQvfEQDh-WQs"
            
            const clock = new Cesium.Clock({
                startTime: Cesium.JulianDate.fromIso8601("2013-12-25"),
                currentTime: Cesium.JulianDate.fromIso8601("2013-12-25"),
                stopTime: Cesium.JulianDate.fromIso8601("2013-12-26"),
                clockRange: Cesium.ClockRange.CLAMPED,
                clockStep: Cesium.ClockStep.SYSTEM_CLOCK_MULTIPLIER,
                multiplier: 4000, 
                shouldAnimate: true,
            });

            window.viewer = new window.Cesium.Viewer("init-viewer-wrapper", {
                terrainProvider: new window.Cesium.CesiumTerrainProvider({
                    url: 'http://data.mars3d.cn/terrain',
                    requestWaterMask: true,
                    requestVertexNormals: true
                }),
                sceneMode: window.Cesium.SceneMode.SCENE3D,
                vrButton: false,
                animation: false,
                baseLayerPicker: false,
                geocoder: false,
                timeline: false,
                fullscreenButton: false,
                homeButton: false,
                creditContainer: document.createElement('div'),
                infoBox: true,
                navigationHelpButton: false,
                sceneModePicker: false,
                scene3DOnly: true,
                clockViewModel: new Cesium.ClockViewModel(clock),
                skyBox: new window.Cesium.SkyBox({
                    sources: {
                        positiveX: require('@/assets/images/tycho2t3_80_px.jpg'),
                        negativeX: require('@/assets/images/tycho2t3_80_mx.jpg'),
                        positiveY: require('@/assets/images/tycho2t3_80_py.jpg'),
                        negativeY: require('@/assets/images/tycho2t3_80_my.jpg'),
                        positiveZ: require('@/assets/images/tycho2t3_80_pz.jpg'),
                        negativeZ: require('@/assets/images/tycho2t3_80_mz.jpg'),
                    }
                })
            });

            window.viewer.scene.globe.enableLighting = true;
        }
    }
}
</script>
  
<style>
#init-viewer-wrapper {
    width: 100%;
    height: 100%;
}
</style>
  